1.SOHC
SOHC (Single Overhead Camshaft) in Chinese meaning single overhead camshaft.
mixing the intake valve and exhaust valve arranged on a cam shaft, i.e., a simple single overhead camshaft (SOHC)
single camshaft mechanical structure, fewer problems, low speed torque larger. Single camshaft intake and exhaust valve opening time is fixed, but a simple mechanical structure, easy maintenance, fuel economy is a single convex edge.